Lock.



C. W. STOCKBURGER. LOCK. APPLICATION FILED APR.28. 191s.

CHARLES W. STUC'ZBURGER, OF ALLEIT, TEXAS.

LOCK.

Application filed Apri128, 1815.

To all whom it may concern:

Be it {HOWE that 1, CHARLES d STOCK- nimosu, a citizen of the United States, residing at Allen, in the county of Collin and State of Texas, have invented certain new and useful Improvements in Locks, of which the following is a specification, reference being had to the accompanying drawings.

My present invention relates to new and useful improvements in locks and has particular reference to those of the type which are designed especially for use in connection with screen doors and the like.

The principal object of the invention is to provide a lock of this character which is relatively simple in construction and may be easily and quickly set to permit the door to open and close, without hindrance, or to lock the door in closed position.

A more specific object of the invention is to provide a lock in which the lock bolt is both rotatable and slidable, with respect to the lock casing and is provided at its outer end with a loclc bar which is normally held, by yieldable means contained within the casing, in engagement with a fixed catch secured to the door frame and is adapted to rotate about the bolt, as an aXiS, when the door is being opened.

Another object oft-lie invention is to provide a lock having the above characteristics, in which the lock bar is adapted to move toward the casing when engaging the fixed catch, during the return movement of the door to closed position.

A further object consists in providing a lock bar which is adapted to rotate, when the door is to be opened, so that in case the door suddenly slams to closed position the lock will permit a slight reaction of the door into partially open position so that the shocks to the door will be minimized.

A still further object is to so construct the lock that but one spring is employed in normally projecting the bolt into operative engagement with the fixed catch and in yieldably holding the lock bar against rotation.

The above, and other incidental objects of a similar nature, which will be lereinafter more specifically treated. are accomplished by such means as are illustrated in the accompanying drawings, described in the following specification, and then more particularly pointed out in the claims which are appended hereto and form part of this application.

Epecification of Letters Patent.

Patented Dec, 233E155.

Serial No. 24,521.

YVith reference to the drawings, wherein there has been illustrated the preferred embodiment of this invention, as it is reduced to practice, and throughout the several views of which similar reference numerals designate corresponding parts, Figure 1 is a perspective view showing the several parts of the lock in oisassembled relation to each other, but indicating the manner in which they are adapted to be assembled to form an operative device; Fig. 2 is a section taken vertically through the casing of the lock; Fig. 3 is section taken horizontally through the casing below the plane of the locking bolt; Fig. 4 is a detail view illustrating diagrammatically the position assumed by the loci: bar, when the door or other article to which the lock is applied, is being opened and closed; and Fig. 5 is a perspective view of the lock with parts thereof assembled.

in Fig. 1 the lock is best shown as an operative entirety, the various elements of the lock being shown perspectively in disassembled relation to each other, for which reason reference will first be had to this figure in describing the details of construction. Broadly, the lock includes a casing A, consisting of two substantially U-shaped members 10 and ll; a lock bolt 12, which is mounted in the casing for sliding and rotary movement; lock bar 13 which is carried on the bolt and is adapted to both. slide and rotate with respect to the casing; a stop pin l l which extends through an arcuate slot 15,

formed in o e end wall of the casing; a helical spring 16, which is wound about the bolt and is engaged with the stop arm; a fixed catch member 17 which is engageable by the lock bar, and a locking stud 18 which may be disposed to hold the stop arm against swinging, whereby the lock bar is held in locking engagement with the fixed catch or may be dispos d to permit the stop arm to swing freely, whereby it may be readily disengaged from the catch.

The member l0 is, as above explained, substantially tl-shaped, being formed from a single blank or plate of sheet metal, and constitutes the base portion of the casing. For this reason, the bight wall 19 of the member 10 is provided on its four corners with the apertured cars 20 through which screws or similar fastening devices may be passed for securing the casing to the door, to which the lock is to be applied. Slots or notches, indicated at :21 are included between the ears and the adjacent edges of the member 19, for the reception of lugs 22 which are formed on the lower edges of the side walls 23 of the member 11 at the terminals thereof. When the two elements 10 and 11 of the casing are mated, the side walls of the casing 10 lie between the side walls of the casing 11, the lugs of these latter walls being disposed in the notches 21. Thus, it will be seen that when the two members 10 and 11 are mated, they define a substantially cubical casing. In the approximate center of the bight wall of the member 11 is formed an opening 25, through which passes a connecting bolt 26, the lower end of which is threaded and engaged in the threaded opening 27 in the wall 19 for holding the two members 10 and 11 in assembled relation.

The lock bolt 12 is slidable through the alined apertures 28 which are formed in the end walls of the member 10. The lock bar 18 is formed integrally with the forward end of the lock bolt and is normally held in parallel spaced relation to the end wall 29 by the spring 16 which is wound about the ,bolt 12 and bears at its one end against the end wall 30 and at its other end against a washer 31 which abuts against a stop pin 32 carried by the bolt. The spring 15, being of the expansive type, obviously tends to project the bolt from the casing, thereby maintaining the bar 13 in parallel spaced relation thereto. In order that the spring 16 may also serve as a yieldable means for normally resisting the rotation of the lock bar so that this member will be normally held in engagement with the fixed catch 17, the rear terminal of the spring is extended outwardly to bear against the inner face of the side wall 23, as disclosed best in Fig. 2. The forward end of the spring is directed laterally and bent to provide a hook which embraces the inner end of the stop pin 14: and seats in a groove 3-1 formed therein. It will now be seen that the spring 16 possesses two functions. In the first place, it acts as a yieldable means for normally projecting the locking bar into engagement with the fixed catch and, in the second place, it. serves as a yieldable means for resisting the rotation of the lock bar, whereby this member is normally held in position to flatly engage against the inner face of the fixed catch.

It will now be observed that the stop pin 1% is seated in the inner and lower end of the arcuate slot 15, when the lock bar is in looking en agement with the fixed catch and that it is adapted to engage with the outer end of the slot for limiting the swinging movement of the locking bar when this member is swinging up *ardly to permit the door, by which the lock is carried, to open.

From the foregoing descrlption, and particularly upon reference to Figs. 2 and 3 it will now be observed that when the door is in closed position, the locking bar engages with the inner face of the catch member 17,

bein held flatly thereagainst by the spring 16. T he upper end of the catch member is disposed slightly below the locking bolt so that it will engage the locking bar below this member. Thus, when the door is to be opened, the locking bar will be swung upwardly to a horizontal position and will ride over the upper end of the catch member, permitting the door to open. As soon as the door opens and the free end of the lock bar disengages from the catch member, the pring 16 acts to immediately return the locking bar to vertical position, as in Fig. 4. Thus when the door returns to closed position, the locking bar will be disposed in the path of the catch member, whereby this member will engage the beveled face of the locking bar, causing this member to move toward the end wall of the casing, against the tension of the spring 16 which, as pre viously explained, normally tends to project the locking bar. When the door is moved to complete closed position, the lockingbar will have been carried slightly past the catch member, so that the spring may again act to project the bar which will then be held flatly against the catch by the hook member 33 of the spring. It is now to be observed that should the door suddenly slam, a great deal of shock will be taken up by the initial sliding of the bar toward the casing, through the medium of the yieldable resistance offered by the spring. It is further to be noted that the tendency of the door to react, after being slammed, will be taken up by the spring since this member will permit the door to partially open. in this connection, it will be observed that if the door tends to react, the latch bar will be swung upwardly against a yieldable resistance offered by the spring, but will be again drawn down to normal, vertical position as soon as the spring has overcome the tendency of the door to return to open position.

The function of the stud 18 will now become apparent for it will be seen that this member is to be employed as a means for positively holding the lock bar against rotation, so that the door may not open. This stud 18 is provided with. a reduced stem 35 which is mounted to slide through a slot 36 formed in the bight or top wall 2% of the member 11. A head 37 is formed on the stem 35 to prevent this member from dropping. Seated upon the shoulder 38 formed at the junction of the member 18 and stem 35, is a leaf spring of how shape, indicated at 39. The edge portions of this spring bear against the under face of the wall 21-, as shown in Fig. 3 and thus serve to yieldably clamp the head against the wall 24 so that the stud 18 may be frictionally held in adjusted position. When the stem 35 is disposed in the rear end of the slot 36, the stud 18 is positioned, as shown in Fig. 3 in spaced relation to the terminal of the stop pin 1 1, so that this member may swing freely within the casing, thereby permitting the lock bar to move, Without hindrance. When the stem 35 is disposed in the forward end of the slot, however, the stud 18 is positioned directly over the stop pin, thus serving to prevent the swinging of the stop pin. Obviously, the lock bar may not move to the horizontal position necessary to disengage it from the fixed catch, when the stud 18 is in looking engagement with the stop pin.

In reduction to practice, it has been found that the form of this invention illustrated in the drawings, and referred to in the above description as the preferred embodiment is the most eliicient and practical; yet realizing that the conditions concurrent with the adoption of this device will necessarily vary, it is desirable to emphasizethe fact that Various minor changes in the details of construction, proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of this invention, as defined by the appended claims.

ll hat is claimed is rotatable and slidable with respect to the casing, a fixed catch member engageable by the lock bar, yieldable means for normally projecting the bar from the casing and re sisting the rotation of the bar, and an adjustable means movable to a position to prevent the rotation oi the lock bar.

2. A lock including a casing, a lock bar slidable and rotatable therein, a lock bar fixed on the outer end or the bolt, a fixed catch member, and yieldable means normally projecting the lock bar into engage 'ient with the catch member, said means ser ing also to normally maintain the lock bar flatly against the catch member and to resist the rotation of the lock bar.

3. A look including a slidable and rotatable lcck bolt, a lock bar lixed on the outer terminal of the bolt and extending at right angles thereto, a fixed catch, and a helical spring wound about the bolt :tor normally projecting the same into engagement with the catch member, said spring serving also to maintain the lock bar l'latly against the catch, and to resist the rotation of the lock bar during the disengaging of the bar from the catch.

A look including a casing provided in one end wall with an arcuate slot, a lock bolt slidable and rotatable in the casing, a lock bar carried by the bolt and extending at right angles thereto, a stop pin carried by the free end of the bar and movable i. A look including a casing, a lock bar through the slot, a helical spring wound one end wall with an arcuate slot, a lock bolt slidable and rotatable in the casing, a lock bar carried by the bolt and extending at right angles thereto, a stop pin carried by the free end of the bar and movable through the slot, a helical spring wound about the bolt for normally projecting the same into locking position, said spring being termi nally engaged with the stop pin for normally maintaining the lock bar in locking position and for resisting the rotation of the bar, and a catch member engageable by the bar, the upper end of said bar being disposed below the lock bolt, whereby the bar may swing upwardly to horizontal position above the catch member, when the bar is to be released.

6. A lock including a rotatable lock bolt, a lock bar fixed on the end of the lock bolt, a fixed catch member engage-able by the lock bar, the upper end of the catch being disposed below the locl; bolt, whereby the lock bar may swing to horizontal position above tie upper end of the catch when being released from engagement therewith, yieldablc means norn'ially resisting the rotation the bar, and an adjustable locking stud adapted to positively maintain the bar against rotation.

'7. A. lock including a rotatable lock bar, a fixed catch member, said lock bar being normally disposed in the path of the fixed catch, and being rotatable to a horizontal position to clear the catch, yieldable means normally resisting the rotation of the bar,

and an adjustable stud for positively holding the bar against rotation, said bar being adapted, when the stud is in released position, to be raised to a horizontal posit-ion by the catch member when the door is pulled to open position.

8. A door lock including a casing, a lock bar rotatable and slidable with respect thereto, a fixed catch member, and yieldable means normally projecting the latch ha and resisting the rotation of the same, said latch bar being adapted, when the door is moved from open to closed position, to engage with the catch and slide toward the casing in passiin the catch member and to be projected into engagement against the inner face or the catch member by means or the yieldable means as soon as the door has been closed, said bar being adapted, when the door is being pulled from closed to open position, to rotate to a position at right angles to the catch member whereby it may clear the catch member.

9. A door lock including a casing, a lock bar rotatable and slidable With respect thereto, a fixed catch member, yieldable means normally projecting the latch bar and resisting the rotation of the same, said latch bar being adapted, when the door is moved from open to closed position, to engage with the catch and slide toward the casing in passing the catch member and to be projected into engagement against the inner face of the catch member by means of the yieldable means as soon as the door has been closed, said bar being adapted,

when the door is being. pulled from closed to open position, to rotate to a position at right angles to the catch member whereby it may clear the catch member, and an adjustable means adapted to be positioned to v prevent the rotation of the bar whereby the bar may be maintained in locking engagement with the catch and the door held in closed position.

In testimony whereof I hereunto affix my signature in the presence of two Witnesses.

CHARLES STOCKBURGER. \Vitnesses T. C. Rose, ETTA QUIsENBnRRY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

